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Table 2 The summary statistics of the CREDI, Bayley-III, and ASQ-3

From: Reliability and validity of the Caregiver Reported Early Development Instruments (CREDI) in impoverished regions of China

  Mean SD Min Max
1. CREDI(n = 946)
Z-score
  Cognitive 0.058 1.095 −2.981 5.887
  Language 0.334 1.068 −2.682 6.951
  Motor −0.012 1.020 −3.311 6.069
  Social-emotional 0.287 1.047 −3.010 5.101
2. Bayley-III(n = 248)
Composite scores
  Cognitive 102.036 13.527 65.000 145.000
  Language 103.423 16.911 62.000 153.000
  Motor 105.871 16.436 61.000 151.000
3. ASQ-3(n = 955)
Scores
  Problem Solving 46.549 12.500 0.000 60.000
  Communication 45.327 13.604 0.000 60.000
  Fine Motor 47.611 13.937 0.000 60.000
  Gross Motor 41.897 14.621 0.000 60.000
  Personal-Social 44.904 11.644 0.000 60.000
  1. Note: The CREDI Z-scores were constructed by comparing the raw score in each domain to the average raw score in our CREDI reference population of a particular age. A z-score of 0 thus means that the child has exactly the same score on that particular domain as the average same-age child in the CREDI reference population. A score of “-1” means that the child’s raw score is 1 standard deviation below the same-age average of the reference population (more details about the reference population can be found in the CREDI data management & scoring manual). The range score for each domain of Bayley-III composite scores is 55 to 145 for Cognitive, 47 to 153 for Language, and 46 to 154 for Motor, respectively. The raw score range of the ASQ-3 for each domain is from 0 to 60